/* Netzspannung Live — Design-System (dark "scientific instrument") */
:root {
  --bg: #0c1118; --panel: #121a24; --panel2: #0f1620; --grid: #23303f;
  --text: #c9d6e3; --dim: #7e8ea0; --line: #1c2734;
  --nominal: #3fb96b; --upper: #e5484d; --lower: #4f74ff;
  --accent: #22d3ee; --accent2: #f5a623; --danger: #e5484d;
  --radius: 14px; --maxw: 1320px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 75% -10%, #16202c 0%, var(--bg) 55%) fixed;
  color: var(--text); font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 15px; line-height: 1.45; -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1,h2,h3,h4 { margin: 0 0 .3em; font-weight: 650; letter-spacing: -.01em; }
.mono { font-family: ui-monospace, "JetBrains Mono", Menlo, monospace; }

/* Layout */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 18px; }
header.site {
  position: sticky; top: 0; z-index: 50; backdrop-filter: blur(10px);
  background: rgba(9,13,19,.82); border-bottom: 1px solid var(--line);
}
.head-row { display: flex; align-items: center; gap: 18px; padding: 12px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand .logo {
  width: 36px; height: 36px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--nominal));
  display: grid; place-items: center; font-size: 19px;
}
.brand h1 { font-size: 17px; margin: 0; }
.brand .sub { font-size: 12px; color: var(--dim); }
.spacer { flex: 1; }

/* Live-Stat-Chips */
.chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  background: var(--panel); border: 1px solid var(--line); border-radius: 11px;
  padding: 6px 12px; min-width: 78px; text-align: center;
}
.chip .val { font-size: 16px; font-weight: 680; font-variant-numeric: tabular-nums; }
.chip .lbl { font-size: 10.5px; color: var(--dim); text-transform: uppercase; letter-spacing: .04em; }
.chip .val.danger { color: var(--danger); }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--nominal);
  box-shadow: 0 0 0 0 rgba(63,185,107,.6); animation: pulse 2s infinite; display: inline-block; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(63,185,107,.55)} 70%{box-shadow:0 0 0 7px rgba(63,185,107,0)} 100%{box-shadow:0 0 0 0 rgba(63,185,107,0)} }

.btn {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  background: var(--accent); color: #06222a; border: none; border-radius: 10px;
  padding: 9px 15px; font-weight: 650; font-size: 14px;
}
.btn:hover { filter: brightness(1.07); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.sm { padding: 6px 11px; font-size: 13px; }

/* Tabs */
nav.tabs { display: flex; gap: 6px; padding: 8px 0; overflow-x: auto; border-bottom: 1px solid var(--line); }
.tab {
  background: transparent; border: 1px solid transparent; color: var(--dim);
  padding: 8px 14px; border-radius: 10px; cursor: pointer; white-space: nowrap; font-size: 14px;
}
.tab:hover { color: var(--text); background: var(--panel2); }
.tab.active { color: var(--text); background: var(--panel); border-color: var(--line); }

/* Views & cards */
main { padding: 20px 0 60px; }
.view-inner { display: flex; flex-direction: column; gap: 18px; }
.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel2) 100%);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
}
.card > h3 { font-size: 15px; display: flex; align-items: center; gap: 8px; }
.card .desc { color: var(--dim); font-size: 13px; margin: -2px 0 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.chart { width: 100%; height: 380px; }
.chart.tall { height: 460px; }
.chart.sm { height: 240px; }

/* Toolbar / controls */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar label { font-size: 12.5px; color: var(--dim); }
select, input[type="text"], input[type="number"], input[type="date"] {
  background: var(--panel2); color: var(--text); border: 1px solid var(--line);
  border-radius: 9px; padding: 7px 10px; font-size: 14px;
}
input[type="range"] { accent-color: var(--accent); }

/* KPI grid */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 12px; }
.kpi { background: var(--panel2); border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px; }
.kpi .val { font-size: 24px; font-weight: 720; font-variant-numeric: tabular-nums; }
.kpi .lbl { font-size: 12px; color: var(--dim); margin-top: 2px; }
.kpi .val.good { color: var(--nominal); } .kpi .val.bad { color: var(--danger); }

/* Legend */
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 12.5px; color: var(--dim); margin-top: 8px; }
.legend .item { display: flex; align-items: center; gap: 6px; }
.legend .sw { width: 16px; height: 4px; border-radius: 2px; display: inline-block; }
.legend .sw.dot { width: 10px; height: 10px; border-radius: 50%; }

/* Live-Feed */
.feed { display: flex; flex-direction: column; gap: 2px; max-height: 520px; overflow-y: auto; }
.feed-row { display: grid; grid-template-columns: 64px 1fr auto; gap: 10px; align-items: center;
  padding: 8px 10px; border-radius: 9px; border: 1px solid transparent; }
.feed-row:hover { background: var(--panel2); }
.feed-row .t { color: var(--dim); font-size: 12.5px; font-variant-numeric: tabular-nums; }
.feed-row .plz { font-weight: 600; }
.feed-row .v { font-weight: 700; font-variant-numeric: tabular-nums; text-align: right; }
.feed-row.new { animation: flashin .8s ease; }
@keyframes flashin { from { background: rgba(34,211,238,.15); } to { background: transparent; } }
.badge { font-size: 11px; padding: 2px 7px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line); color: var(--dim); }

/* Map */
.map-wrap { position: relative; height: 600px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
#leaflet-map { position: absolute; inset: 0; background: #0a0f15; }
.map-legend { position: absolute; right: 12px; bottom: 18px; z-index: 500;
  background: rgba(12,17,24,.9); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 12px; }
.map-scale { height: 10px; width: 180px; border-radius: 5px; margin: 6px 0 4px;
  background: linear-gradient(90deg,#2f6f4f,#3fb96b,#9acb3c,#f5a623,#e5484d,#a01018); }
.map-scale-lbls { display: flex; justify-content: space-between; color: var(--dim); }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { background: var(--panel); color: var(--text); }

/* Time slider for map */
.slider-row { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.slider-row input[type="range"] { flex: 1; }
.slider-row .tlabel { min-width: 120px; font-variant-numeric: tabular-nums; color: var(--text); }

/* Empty / loading states */
.empty { color: var(--dim); text-align: center; padding: 38px 10px; font-size: 14px; }
.skeleton { background: linear-gradient(90deg,var(--panel2),#16202c,var(--panel2));
  background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: 8px; }
@keyframes shimmer { to { background-position: -200% 0; } }
.note { font-size: 12.5px; color: var(--dim); }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px;
  background: rgba(34,211,238,.12); color: var(--accent); border: 1px solid rgba(34,211,238,.25); }

/* Footer */
footer.site { border-top: 1px solid var(--line); color: var(--dim); font-size: 13px; padding: 22px 0 40px; }
footer.site .links { display: flex; gap: 16px; flex-wrap: wrap; }

/* Forms (Mitmachen) */
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 13px; }
.field label { font-size: 13px; color: var(--text); }
.row3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.code {
  background: #07101a; border: 1px solid var(--line); border-radius: 10px; padding: 13px 15px;
  font-family: ui-monospace, monospace; font-size: 12.5px; white-space: pre; overflow-x: auto; color: #b9e6ff;
}
.ok { color: var(--nominal); } .err { color: var(--danger); }